What is a primary function of humectants in skincare products?

Humectants are key ingredients in skincare products primarily because they have the ability to draw moisture to the skin. This function is crucial for maintaining hydration levels, which can lead to improved skin texture and elasticity. Humectants work by attracting water molecules from the environment and from deeper layers of the skin, effectively increasing the moisture content on the surface. This property makes them essential for products designed for dry or dehydrated skin, as they help to create a plumper, more youthful appearance.

While exfoliation, UV protection, and skin barrier repair are important features in skincare, they serve different purposes and rely on different types of ingredients. For instance, exfoliants are designed to slough off dead skin cells, sunscreens are intended to shield the skin from UV damage, and various emollients and occlusives are used for barrier repair. The specific role of humectants, however, is centered on hydration, which is why this option is the accurate reflection of their primary function.